Day 4: Body Swap

The door flew open, cracking in its hinges and slamming against the wall with a deafening thud. Even a few of my test tubes began to shudder in their timber stud. The racket was loud enough to demand attention, and yet I didn't bother turning in my seat to check out who was responsible for it. I knew there was only one person who'd storm in here with the intent to tear down my lab with his bare hands.

"Hello Levi," I drawled, righting my glasses and bending down to continue my inspection of a raw muscle fiber. "What can I do for you?"

He huffed, which sounded hilariously off. It made me chuckle quietly—well, quietly for my standards.

"Are you fucking serious right now?" He thundered. He wasn't the type to raise his voice, not ever, but today was obviously different. This could either mean that he was having an exceptionally crappy day, or that I'd really managed to piss him off royally this time. Were I to guess, I'd say it was a combination of both.

I felt his stomping footsteps closing the distance between us, and then he was on me. He grabbed my shoulder to swivel my chair around and then his hand wrapped around my throat, applying enough pressure for me to feel it. Not that I was bothered by that. I was used to his loving touches. When I finally laid eyes on him, I couldn't help bursting into a hysterical giggle, despite being currently held in a chokehold by Humanity's Strongest.

Well... Only that he wasn't Humanity's Strongest, at least not from the outside.

Huge, emerald eyes were staring down at me, blazing with rage. I'd seen that expression dozens of times, yet today it looked different. As if it was a mask, usually worn by someone else. Technically speaking, that was correct.

"I can't believe it worked," I gushed, meeting his eyes.

His eyes—Eren's eyes—blinked down at me, as if he had trouble believing what I'd just said. I took advantage of his brief moment of stunned silence and gave him a thorough once over. There was nothing out of the ordinary, no stunted limbs or other disfigured body parts. There was no doubt—this was Eren. Well, at least Eren's body, and judging by the way this Eren reacted, I'd succeeded at swapping Levi's and Eren's bodies.

"Okay Eren—eh, I mean Levi. This is probably going to sound a bit insensitive, but you really have to let me examine you!"

"Excuse me?!" He yelled and shoved me away. "You've really done it now, haven't you? You've lost your damn mind."

"No more than usual," I said with a sly grin. It was unreal to hear Eren talking and acting just like Levi did. It seemed so wrong. God, I needed to study him. Both of them. Hopefully, the other subject of my little body swap experiment was alright as well.

"Hanji, I'll give you one chance to fucking fix me. Give me some of your pills or injections or whatever the hell makes this right again, and I'll let you live. Maybe."

"Well, you see... That's the thing—" I began when a timid knock sounded on the door. Or more like, the doorframe, because the door was still smashed into the stone wall from when Levi had opened it just a few minutes ago.

My eyes snapped to the entrance—and there he was, my little Levi! My heart made an excited jump inside my chest. I just needed to question them, to study them! It would be my life mission, starting right now.

I watched Levi—in Eren's body—staring wide-eyed at his own body, walking around without him being the one to control it. The poor midget, he seemed to be in shock.

"Uhm, Squad Leader Hanji, I—I think there's something wrong with me," Eren said in Levi's voice. His raven eyebrows creased with worry, and he looked down at his hands while he shuffled his feet uncomfortably. Then, he blushed. Levi, blushing! This needed to be noted down in my observation diary at once!

"Good morning, Eren," I greeted him cheerfully, skipping over and wrapping an arm around his shoulders.

"W-Wait," he stammered, slate-colored eyes huge, "You know who I am?"

"Of course she does," Levi snorted, "Who do you think is responsible for this fucking mess?"

Eren's now gray eyes snapped to Levi, now tall and tan and very Eren. I watched as things clicked into place inside his fifteen-year old mind, and then he gasped, his hand shooting up to cover his mouth as his eyes flitted from me to his own body standing over by my desk.

"C-Captain?" He whispered, a mix of shock and disbelief washing over his features.

"Yes Eren, it's me," Levi sighed, crossing his arms. "Me, in your bratty body! Hanji did something to make us switch over night!"

Eren tensed, his mouth dropping open.

"What... How... I don't understand! How is this possible?" Eren asked, looking at me for help.

I grinned. "Well, you see... It's an experiment. Remember those pills I gave you last night? All the magic is in them."

"Magic?" Levi huffed deprecatingly. "Change us back, right now!"

"Well, as I was trying to say earlier..." I let Eren go and moved over to my desk, nudging Levi aside to take a seat in my chair. "I can't."

All hell broke lose after that. Levi and Eren started talking at the same time, their eyes fixed on me with shock and indignation. It was too funny, really.

"What the fuck do you mean, you can't?" Levi groused. "Hanji! I won't spend the rest of my life in the body of a constantly horny fifteen-year-old brat!"

Eren flushed a fierce scarlet. "I-I... I am not constantly horny!"

"Oh please," Levi huffed. "It's not even noon and my—no, your damn dick has been hard at least three times. It's annoying the hell out of me."

"Well, I—I am sorry! I am still... Developing," Eren defended, his embarrassment almost palpable. I'd never seen Levi embarrassed before, the view was glorious. I'd definitely have to tell Erwin all about this later. Eren began to play with one of the belts of Levi's uniform.

"Hey, brat," Levi spoke up. "You better not touch my body in any way you're not supposed to. Trust me, I will find out and then you'll make a nice rug for my quarters."

"Uhm, no—I! I would never..." Eren stammered, shaking his head fervently from side to side. Well well, maybe he had already touched somewhere he wasn't supposed to. I knew that I would.

Levi was starting up another rant and Eren tried desperately to defend himself. I could watch them for days, but as it was, my experiment wasn't done solely out of personal entertainment. There was a very special kind of ulterior motive I was following with this.

"Now now, boys!" I said, stepping in between before Levi could actually seize Eren's throat. "Stop!"

They both looked at me, waiting for me to go on. I took a deep breath and sat my ass back down.

"The reason why this whole body swap even worked was because you," I motioned to Levi, then to Eren, "and you have some unresolved issues to sort out between the two of you."

"That's ridiculous," Levi said, his eyes fluttering to Eren before fixing back on me. "We don't have any unresolved issues."

"Please, Levi," I said, shaking my head with a sigh. "You do. As I said, the body swap wouldn't have worked otherwise. You'd still be in your own bodies, happily living your lives."

Levi cursed and leaned against the wall. Eren took a tentative step closer, watching Levi. Then he looked at me. "What kind of unresolved issue?"

Finally. Someone had decided to actually listen to what I was saying. That it was the fifteen-year-old brat instead of the 'reasonable adult' here didn't exactly speak well for Levi. I made a mental note to tease him about that forever when all of this was over.

"That's for you to find out," I replied. "I can't tell you what it is."

"Fuck, this can't be happening!" Levi exclaimed, kicking one boot back against the wall in exasperation. "What now? We're supposed to play detective to find out what made-up issue we have going on between us?"

I smiled up at a scowling Levi. The way Eren's face was scrunched up looked so funny. "It's not made up, Levi. The sooner you start believing it, the sooner you'll find a solution for your... Predicament."

I looked back to Eren and caught him in the middle of staring at Levi. Even in his Captain's body, that fact hadn't changed. He'd always look at Levi like that. His new eye color and shape did nothing to conceal the admiration in them; admiration and a little bit of this other thing I liked to call 'desire'. It was so cute, he'd follow Levi everywhere, and despite the fact that the Captain always acted like he was bothered by it, I knew better. In fact, I knew him well enough to read the truth in all the little things he only ever seemed to do when Eren was around. It was hidden to anyone who didn't know him as well as I and a few other chosen ones did.

"Well, that's all I can tell you," I concluded. It was time they got a few moments alone. This wouldn't work any other way. It was something they had to do by themselves.

Eren sighed. "Is there anything you can tell us? A piece of advice maybe?"

Wasn't he a smart boy. I chuckled loudly.

"If you want some advice, you should explore your new bodies. This is a once in a lifetime chance, so I would take advantage of it while it lasts."

I threw Eren a knowing glance and laughed when he flushed with new color, at the same time that Levi fell into another cursing tirade that had my name slapped to it. All it did was make me laugh harder.

"I think I'll accompany you. Do some observing," I said meaningfully.

"Accompany us where, shitty glasses?" Levi huffed.

"Training!" Eren gasped. "Captain, there's training in a few minutes, how are we—"

"Tch," Levi tsked. "We have to get going. You better not put me to shame."

"I can't believe I'm fucking back to cadet training! This is a nightmare," Levi complained while doing warm up stretches around the training grounds with the other cadets of the 104th training corps.

"Huh?" Armin, Eren's best friend perked up from holding onto his toes. "You are a cadet, Eren. Uhm, listen... Are you alright? You seem kinda... Off today."

"Sure," Levi replied snidely. "Why wouldn't I be alright? It's a great day, right? We're training to... Kill. All the titans. Yeah, that's... Great."

Having listened in to their conversation, I turned away to laugh into my arm. God, this was too good. Levi trying to be Eren, it was absolutely hilarious. He was trying, that much I had to admit, yet still he stuck out like a sore thumb. I was seriously beginning to wonder what everyone who had anything to do with Eren today must be thinking of him.

"He's not... Very good at this. At being me, I mean," Eren whispered to me. It was easier for him playing Levi, because Levi was quiet and salty by nature, which meant there were fewer opportunities for him to mess up his role.

"No, he isn't," I replied on a sigh. "But that was to be expected, wasn't it?"

I followed Eren's gaze as he watched every move Levi made during training, a small smile playing around his lips that was utterly atypical to see on Levi's face. Armin, Mikasa and the others were shooting each other worried glances as they tried to make sense of Eren's weird behavior.

"He's kind of... Cute, though. Isn't he?" Eren said, a tad too dreamy.

I pinned my eyes on Levi once more, observing as he shoved a tall boy named Jean Kirstein to the floor with a loud curse. Yeah. Totally cute.

I only grinned quietly to myself, before I leaned in closer to Eren and whispered, "Make them run ten laps of the field next. Address them with 'inept brats'."

"What—Oh, uh!" Eren cleared his throat and then spoke in what I assumed to be Eren's version of his Captain's commanding voice, "Okay, you inept brats, ten laps of the field. Go!"

As the cadets filed to the outer ring of the training grounds and began running, Eren settled back against his spot at the wall and slipped back into a smile. His eyes were still fixed on Levi out there, watching how he did his best to control a body that wasn't his. Both of them had trouble making their bodies move the way they wanted to. There was a good ten centimeter height difference between the two, and suddenly making do with an entirely different body build was more than anyone could get the hang of in a few minutes. It was adorable to look at. They were like precious fawns.

"Talk to him," I said, taking a step closer to Eren. "You can resolve this, you just have to work together. Be honest with each other. I know you know what I mean."

I gave him an encouraging smile and nudged his side. He blushed in response, one hand wrapping around the back of his neck to rub at the tan skin there.

"I really don't know," he said on a forlorn sigh. "He'll never see me that way."

It was the most honest Eren had ever been with me, and a sudden pull of empathy tugged on my insides. Eren's feelings were so painfully obvious, for everyone but the one they were meant for. Levi was so thick when it came to things like these. And Eren, well... Eren decided to suffer quietly.

"Don't give up," I said, swiping what I hoped to be a comforting hand down his arm. "He just doesn't know how to deal with these things. He's never let anyone get close to him."

"It's alright," Eren said, his big eyes glassing over. "It doesn't matter. Not anymore. As long as I can be with him... That's enough for me."

A quick flicker of guilt passed through me and for a brief moment, I wondered if I'd gone too far with my experiment this time. Eren's feelings were real—so real—and it felt wrong to interfere and mess with them. However, it was done now. I did it with good intentions after all, and maybe my plan would result in the desired outcome in the end. It all depended on whether Eren was really ready to give up, because Levi wouldn't be the one to come out first.

Come on, Eren. You're so tenacious, don't break that habit now.

After a few more hours of training, Eren sent the cadets off to the showers while we were heading back inside the castle to get dinner. I left Eren by Levi's private quarters, cracking a joke at how Levi had to sleep in the barracks that night, and slipped back to my office to change out of my uniform. I was in the middle of unbuttoning my shirt when I heard the door open and close quietly. I peeked out from behind the room divider I kept to separate my lab from the infirmary. Erwin was standing by the door, leaning against it and watching me with his ever-observant eyes.

"Can't a girl change without getting peeped on in here?"

"Drop the act. We both know there's nothing I haven't seen before," he replied, unimpressed.

"Ha," I huffed. "What do you want, Commander?"

"A body swap, Hanji? Really? This is what you came up with?"

I threw him a meaningful glance and shrugged. "Just admit I am brilliant."

He chuckled lowly and pushed away from the wall, coming over to where I was slipping into a brown shirt. "I thought you'd come up with something more... Target-aimed."

"Target-aimed?" I cackled. "What did you have in mind, Commander? An aphrodisiac?"

"Actually, yes. Something like that," he sighed, running a hand through his perfect blond hair. "It would've been easier."

"Well, an aphrodisiac's effect wears off. Worst case, they come to and write everything off as a mistake under the influence."

"I guess you do have a point," he said thoughtfully. "Why is it so hard with them?"

"It's Levi," I said by way of explanation.

Erwin sighed again, but stayed silent. Based on the pensive expression on his face, he was thinking about what we could expect from the current situation.

"Imperative is that they sort out their feelings. Both Levi and Eren are at their strongest when they are together. Lately, Eren's emotional turmoil has made his abilities more volatile than ever. We cannot take the risk that circumstance implies. We need to rely on him, as well as Levi, for future expeditions. I trust your judgment to know that this body swap will lead to that."

I eyed him with a lifted eyebrow. "I know. Though we're also doing this for them, right? Please don't tell me this is only about their strategic value."

"Of course we're doing it for them," Erwin replied determinedly. "Levi has been through so much. He deserves this more than anyone. The problem is that he doesn't know how to let himself loved by someone. I know for a fact Eren is the only one who can get close to him, solely because he's already closer than Levi has ever allowed anyone else to come. He's the right one. Levi just has to realize it."

I nodded slowly, a small smile slipping over my lips. Erwin was ruthless and calculating, but he did care about his the people close to him.

"You should talk to Levi, Erwin. He values your opinion, I do think he'll listen to you." I sighed. "I'd do it myself but he's super pissed off at me about this whole body swap thing. I'm the last person he'd talk to about his feelings at the moment. I'd better stick to pestering Eren."

He nodded. After another few moments of discussing our plan, we left my lab and headed to the mess hall for a well-deserved dinner.

"Are you alright? You look like as if you're in pain," Eren whispered to Levi, his voice heavy with concern. They were sitting together at the mess table, a little bit too close for superior-subordinate standards, but they didn't seem to care. I shuffled closer as inconspicuously as I could, keeping up the pretense of eating while I focused on eavesdropping on their conversation.

"Of course I am in fucking pain," Levi complained. "I've been put through a whole day of cadet training and I am pissed."

Eren blushed sweetly and reached out for Levi before coming to his senses and quickly dropping his hand.

He settled for apologizing, "I'm so sorry. Really. I am doing my best to make this right."

Levi watched Eren intently, before he sighed with a shrug of his now narrow shoulders. Eren was looking so disheartened, it was hard to keep nagging, even for Levi. It was obvious how much he wanted his Captain to be out of this trying ordeal. As always, he put Levi before himself. Before anyone else.

"It's okay," Levi whispered back, nudging his shoulder against Eren's, a slight touch that made Eren's eyes snap right up, cheeks flushing. "We have to solve this mess together, don't we? So, go ahead. What kind of issue do you have with me?"

Oh, this was getting interesting. I scooted a bit closer still, relieved when they didn't seem to notice. From the view of it, they were too wrapped up in each other, which was definitely a good thing.

"I don't have an issue with you, Captain," Eren whispered reassuringly.

"Well fuck," Levi huffed, pushing the mashed potatoes around on his plate. "Because I don't have an issue with you either. At this rate, we'll never be able to switch back."

Something like defeat ghosted over Levi's face, an emotion that was very familiar on Eren's face. Eren noticed. He reached out under the table, wanting to touch Levi's hand. Then he stopped mid-air, apparently contemplating if he was allowed to touch his superior.

I stuffed my face with vegetables and encouraged Eren mentally to take the leap. From the look of it, my silent pep talk worked, because Eren closed the distance and linked his fingers with Levi's.

Levi looked up to muster Eren questioningly. "What do you think you're doing, brat?"

"I just want to touch you. Can't I?" Eren's thumb began to draw slow circles along the back of Levi's hand, and he shivered—only slightly; it would have been missed by anyone who wasn't paying close attention, like I presently was.

I had to suppress a giddy laugh when I realized Levi wouldn't back away from Eren's touch. It was such a small thing, but felt so much like a success either way.

Trying to be sneaky became quite difficult when those two idiots were staring at each other like they did. It felt kind of nice to see them like this, finally taking a step in the direction they were supposed to take.

"I don't know..." Levi replied, obvious wonder lacing through his tone.

"You can just tell me if you don't like it, and I'll stop right away," Eren tried.

His eyes widened when he saw Levi nodding. Hell, my eyes threatened to push right through my glasses in surprise. I couldn't believe Levi would ever allow that.

Eren scooted closer, so close that their shoulders were brushing against each other. Then he slipped out of Levi's fingers and let his hand travel up to his wrist, fingertips fluttering over Levi's pulse points.

There was a soft sigh leaving someone's lips and at first, I wasn't sure if I'd misheard. But then, when Eren repeated the light touch on Levi's wrist, Levi sighed again. His eyes seemed heavier than they were just a second ago, and there was a very light blush on his cheekbones. He was enjoying this.

When the soft sighs and suppressed moans continued, Eren grew more confident. From the corner of my eye, I watched as his hand dropped to Levi's hip, before he slipped it to the small of Levi's back to play with the hem of his tan uniform jacket. Levi's eyes fell closed for a second, his lips pressing into a tight line with restraint.

"Eren..."

"Shh," Eren murmured softly, right next to Levi's ear. "Just give in. I know you want to."

Levi shuddered. He actually shuddered. I'd known him for so many years, and yet I'd never seen him in such an apparent state of... Arousal. There was no other way to define what this was he was feeling right now.

There was a clipped gasp and I looked over to find Eren's hand tugging Levi's shirt out of his uniform pants to slip under the fabric. Levi bit his lip as Eren began to explore the bare skin underneath. I groaned into my water tankard. Levi aroused for the first time in forever and Eren being responsible for it. This was too good!

"Mn Eren, I... Your body... I'm getting..." Levi trailed off on a miserably suppressed whine when Eren ran the pad of his finger along the waistband of Levi's tight pants in the back. When what I assumed to be happening to Levi in Eren's body right now was what was really happening, I didn't know how I'd be able to suppress my manic cackle this time around. I leaned back slightly on the bench, just a bit to see what was going on between Levi's legs. I bit my tongue when I caught sight of the bulge in Levi's pants.

He was getting hard!

Levi's face was twisted in a mix of arousal and helplessness. Of course he would be. The internal battle was painted on his face. Being in Eren's fifteen-year-old body, he couldn't control its reaction to Eren's explorations. This body was young, hormonal and easily excitable. Killer combo when it came to getting a hard on from the lightest touches.

"Captain, you..." Eren leaned in closer, his lips just a mere inch from Levi's ear. "You're getting hard."

"Shut up," Levi huffed, cheeks flushing bright pink. "You are getting hard."

Eren chuckled quietly and moved his hand up Levi's back, apparently adding a touch of nails to the mix.

"Eren, stop! Damn," Levi cursed, his whole body wrecked by a slight tremble.

Eren left Levi's back and came to the front, putting his hand on Levi's thigh, dangerously close to that bulge. I squealed and covered it up with a cough when I caught Eren's fingertips slowly whispering over Levi's arousal. The next second, Levi stood with a curse, his hands smacking down on the table, making everything in their vicinity clatter from the force.

The entire mess hall grew quiet. Everyone had stopped eating in favor of watching what seemed to be another one of Eren's outbursts.

"Eren...?" Mikasa asked, her dark eyes filled with worry. She stood as well, already stepping over the bench she sat on to head to her obviously upset friend. "Are you okay? What's wrong?"

"Nothing!" Levi said a bit too fast. "I just... I don't feel well. I'll go back first. You... Stay. Enjoy your dinner."

Next, Eren rose to his feet, his barely touched food forgotten. "I'll go with you, C—Eren. I don't want anything happening to you on your way back."

Levi threw Eren a chastising stare, but then gave a curt nod. They hurried through the mess hall, Eren hot on Levi's heels. Finally, I could let go. I started laughing like a lunatic while I watched as Levi limped towards the mess hall's door, gleeful over the fact that I was the only one who knew why.

While everyone started chattering about what that had been all about, Erwin slipped to my side and took a seat in Levi's vacated chair.

"Follow them," he whispered to me. "Make sure they stay together."

Okay, maybe Erwin knew as well why Levi had been limping. With this omniscience he was always enshrouded in, I wasn't surprised in the least. I nodded and left the table, trusting Erwin to take care of my abandoned food tray.

With the way Levi and Eren were arguing down the hall, it was easy for me to follow their voices. I was careful about leaving a safe distance between us, and tried to catch what they were talking about.

"Dammit Eren!" That was Levi, with Eren's voice. "What the fuck are you thinking? Getting me fucking hard in the mess hall? I ought to slice you into pieces for that!"

"I am sorry, Captain!" Eren hastily apologized. "I just couldn't... I couldn't stop. Touching you like this... Even if it's my own body, I know it's you inside, feeling every little touch and I... I just want to be with you. In any way I can. "

Levi's steps came to a sudden halt, followed by Eren's a moment later. I stopped and pressed myself to the wall to avoid being seen. Curiosity led me to peek around the corner, and I had to swallow down a gasp when I saw that Levi had Eren pinned up against the wall, one leg thrust between Eren's thighs. I obviously knew they had swapped bodies, but still, it looked kind of nice to see small Levi jostled against the wall by Eren's tall form.

"Why, huh? Why?" Levi bit out, his face only inches away from Eren's, lips parted.

"W-What do you mean?" Eren asked, obviously aroused and stunned in equal measure by the new position his Captain had put him in.

Levi dropped his palms from Eren's shoulders, taking a step back. Some hooded emotion crossed his features, something that seemed like insecurity if I didn't know better.

"Hey," Eren said. "Talk to me."

He reached out gingerly, hand curling around the back of Levi's neck.

Levi looked down at Eren, his eyes fixing on his own slate greys gazing back at him.

"Why do you want to be with me? I'm old and aloof and difficult. I don't know how to deal with feelings," he scrunched up his nose at that point, "and you... You can have anyone you want. Why me, Eren?"

With an inhumanly fluid movement, Eren switched their positions and had Levi pinned up against the wall. He had to look up into his own face now, but he wasn't knocked off course by their switched height difference.

"Because you are what I want! Because you are the only one who makes me feel human; not tainted by this madness inside of me. Captain, I... I'm in love with you. I have been ever since I've seen you for the first time."

In hindsight, I admit that I'd been on the edge of my seat during their conversation. It was so real and so touching, even my mad scientist heart couldn't help missing a beat at Eren's confession.

They looked at each other, both staying silent. Eren was breathing hard, eyes fixed on Levi.

"Fuck," Levi breathed, and then his hands were in Eren's hair and their lips were crushed together. My eyebrows shot up, all the way into my hairline, and I suppressed a loud whoop to cheer them on. My two dorks, I was so proud of them!

Hands began to tug on clothes, moans now coming fast and freely. Eren held onto Levi's tall body and pushed him against the wall, hands dropping down to lift him up. Levi didn't miss a beat, his long legs wrapping against Eren's waist, holding him tight. They whispered something to each other I couldn't understand, and then Eren started moving with Levi wrapped around him, heading in the direction I knew Levi's private quarters to be in.

Yes, boys!

I followed them quietly, stopping at the corner that would lead to Levi's quarters. When I heard the door open and slam shut behind them, I leaned against the wall with a long sigh, finally being able to relax.

Creeping closer to Levi's door, I looked around to assure I was alone and then pressed an ear to the wood. For anyone asking, no, I had no shame.

Multiple objects were crashing down inside, and I chuckled quietly. They were impatient, weren't they? A few moments later, I heard moans. Then groans. Then cries of their names.

I took a step back and dusted off my jacket before giving a satisfied nod. This plan had turned out to be a thorough success. I was still lingering in the hallway, guarding them so no one who wasn't supposed to know would notice what was obviously going on inside the Captain's quarters. If only they'd keep it down a bit. It was hilarious to hear Eren's voice screaming his own name, but knowing what I did, I had to smirk at the fact that Levi seemed to have a grand time in the boy's body. Who knew that little midget was a screamer? Or maybe Eren just didn't leave him much of a choice, I thought with a shit-eating grin.

"What are you grinning for, all by yourself?"

My head snapped around in alarm, but I relaxed as soon as I saw it was Erwin. I motioned for him to come over.

"Find out."

He lifted a suspicious eyebrow at me, but then sighed and leaned in to the door. A slow smile began to spread on his lips a few seconds later.

He shot me a satisfied smile and then turned on his heel to walk back to his own quarters.

"Erwin," I called after him, tapping my toes with glee. "You owe me."

He laughed. "Alright. You win. I'll bring the whiskey bottle over tomorrow."

I nodded and waved him off before I left those two lovebirds in Levi's quarters to what promised to be a sleepless night and retired to my own room.

I'd just risen from a night of fabulous slumber and gotten to work when my door opened to reveal Eren and Levi standing side by side. Remembering the way they'd both stumbled into my lab yesterday, an unrestrained laugh bubbled out of my mouth. Now look at them, being all tame.

"Morning," I said cheerfully. "Had a good night?"

They looked at each other and quickly averted their gazes when both of them smiled blissfully at each other. I was happy to grant them their moment of privacy.

"I think we've... resolved our issue. But we still haven't changed back," Eren said. I swiveled my chair around to watch them. God, it was all over their faces. They were positively glowing, and Eren had his finger hooked in the back of Levi's belt. What was really noteworthy was that Levi didn't seem the least bit bothered by that. I watched as Eren stepped closer and sniffed the back of Levi's neck, closing his eyes and breathing in his scent. Levi pushed his behind back against Eren and clicked his tongue, but there was a faint smile on his lips despite the boy's unrestrained affections in public.

"I have good news for you," I smiled. "I have the pills to switch you back."

"What?" Levi surged up. "Are you serious? Let's fucking have it then."

Eren ran a hand down Levi's back and the latter arched into the touch with a content sigh. They both seemed like they hadn't gotten any sleep last night, with those dark circles under their eyes. But that glow. That glow told me everything I needed to know. I couldn't stop smiling, not for the life of me.

Placing the pills on my palm, I reached it out to them. While they rolled them over in their hands, I brought them some water to go with them. "It will take a few hours for them to take effect."

They nodded and gulped them down with the offered water.

"So?" I laughed.

"So, don't ever fucking do that again," Levi snorted. Then he gazed at Eren, his eyes lighting up as soon as he laid eyes on the boy who was still inside his body, but wouldn't be for much longer. "Not anymore."